Spool and method of making same



July 5, 1932. e. D. ATWOOD SPOOL AND METHOD OF MAKING SAME Filed June 14, 1929 Patented July 5, 1932 UNlTED STATES GEORGE D. ATWOOD, OF BROOKLYN, NEW YORK SPOOL AND METHOD OF IeIAKING SAME Application filed June 14, 1329.

This invention relates to spools and to methods of constructing and assembling the spools.

The invention generally is intended to provide a spool of simple, inexpensive construction, of light weight, yet strong, serviceable, and durable character.

An object of the invention is to adapt the spool for formation from plain sheet stock,

to utilize the waste stock or scrap, and economize in. materials.

A further object is to design the parts for convenient assembly and fasten them rigidly in service.

With these general objects in view, the invention consists in the methods, features, combination of elements, arrangements of parts, and details of construction which will first be described in connection with the accompanying drawing and then more particularly pointed out.

In the drawing:

Figure 1 is a perspective view of a spool M constructed in accordance with the present invention;

Figure 2 is a cross-section of a portion of the construction in process of assembly; and

Figure 3 is a similar view of the completed spool taken as on line 38 of Figure 1.

The illustrated embodiment of the invention comprises a spool having an inner core 10 of hollow cylindrical formation and composed of a metal, such as brass, copper or the like. The core is preferably split longitudinally, as indicated at 11 to impart eXpansible properties thereto. The core is disposed Within the hollow hub 12 of cylindrical character. The ends of the hollow hub are closed by bushings 13 through which the core eX- tends. Plates or flanges 14 are disposed over the ends 01 the hub and are provided with central openings for the hollow core. The plates conceal the ends of the. hub and the bushings, and enclose the bushings within the hub. They serve as sides of the spool during use. The ends 15 of the core projecting beyond the plates are crimped or riveted over thereon, clamp the plates against the hub ends, and provide a rigid assembly of the parts.

Serial No. 370,792.

In assembling the parts, the hub is disposed around the core, and the bushings are slid over the ends of the core and into the ends of the hub. The side plates are then passed over the ends of the core and against the hub ends. The core ends are left projecting slightly from the plates, as shown in Figure 2. The projecting ends are finally crimped or riveted outwardly over on the plates and fasten the parts in rigid assembly.

The crimping or riveting of the core ends has the effect of expanding the core near its ends to some extent. The core is thus forced out against the bushings, and the expanded portions maintain the bushings in proper position near the ends of the hub. if desired, the core may be expanded to a still greater eX- tent by the use of a tool. It is now believed, however, that the riveting expands the core suliiciently.

In a spool according to this invention the plates and bushings may be formed of plain sheet stock. The bushings act to center the hub and to prevent collapse thereof in serv-- ice and during use. In addition, the bushings are considerably smaller than the plates and may be stamped from the waste or scrap of the sheet or sheets of material from which the plates are stamped. The material of the sheet stock is a matter of choice and may be advantageously of cardboard or the like.

What is claimed is:

1. The method of constructing a spool which comprises assembling a hollow hub around a hollow, expansible core, sliding bushings on the core and into the ends of the hollow hub to center the hub on the core and prevent collapse of the hub in service, sliding plates on the ends of the core and against the ends of the hub and riveting the ends of the core over on the plates to fasten the members and to expand the core outward against the bushings.

2. A. spool comprising end plates provided with central openings, bushings below and in close proximity to said plates and having openings coincident with those in the plates, a hub enclosing and in contact with said bushings and with its ends against said plates, and a core of expansible metal passing through and in contact with the walls of the openings in the plates and bushings and having its ends crimped over the plates and expanded laterall in said openings and therea by rigidly fastening the plates, bushings and hub together with the bushings maintained at the ends of and in rigid engagement with the hub and core.

3. A spool comprising end plates provided 10 with central openings, bushings below and in close proximity to said plates and having openings coincident with those in the plates, a hub enclosing and in contact with said bushings and with its ends against said plates, 15 and a core of expansible metal passing through and in contact with the walls of the openings in the plates and bushings and having its ends riveted over the plates and eX- panded laterally in said openings and thereby rigidly fastening the plates, bushings and hub together with the bushings maintained at the ends of and in rigid engagement with the hub and core.

4. The imethod of constructing a spool 5 which comprises assembling a hollow hub around a hollow expansible core, sliding-bushings on the core and into the ends of the hollow hub to center the hub on the core and prevent collapse of the hub in service, :0 sliding plates on the ends of the core and against the ends of the hub and expanding the ends of the core outward against the bushings to maintain the latter in position on the hub. In testimony whereof, I have hereunto set my hand.

GEORGE D. ATWOOD. 

